AP Bio Ch 13+14 Review questions with correct answers
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Course
AP Bio
Institution
AP Bio
Helicase - ANSWER: An enzyme that untwists the double helix of DNA at the replication forks.
Nuclease - ANSWER: A DNA cutting enzyme that excises damaged DNA.
Ligase - ANSWER: An enzyme that connects two fragments of DNA to make a single fragment
DNA polymerase - ANSWER: Enzyme inv...
AP Bio Ch 13+14 Review questions with
correct answers
Helicase - ANSWER: ➡ An enzyme that untwists the double helix of DNA at the replication forks.
Nuclease - ANSWER: ➡ A DNA cutting enzyme that excises damaged DNA.
Ligase - ANSWER: ➡ An enzyme that connects two fragments of DNA to make a single fragment
DNA polymerase - ANSWER: ➡ Enzyme involved in DNA replication that joins individual
nucleotides to produce a DNA molecule
RNA primase - ANSWER: ➡ An enzyme that creates an RNA primer for initiation of DNA
replication.
Telomerase - ANSWER: ➡ An enzyme that catalyzes the lengthening of telomeres. The enzyme
includes a molecule of RNA that serves as a template for new telomere segments.
Cytosine makes up 42% of the nucleotides in a sample of DNA from an organism. Approximately
what percentage of the nucleotides in this sample will be thymine? - ANSWER: ➡ 8%
Purines - ANSWER: ➡ Adenine and Guanine (2 rings)
Pyrimidines - ANSWER: ➡ Cytosine and Thymine (1 ring)
What bonds form between nitrogen base pairs of DNA? - ANSWER: ➡ Weak hydrogen bonds
What did Watson and Crick discover? - ANSWER: ➡ Structure of DNA ("code of life")
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